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Pneumatic knife gate valve attention and characteristics
Pneumatic knife gate valve with compressed air-driven valve, simply put is the pneumatic actuator control valve, in order to achieve the valve on and off. It can be divided into two parts, the upper part of the pneumatic actuator, the lower part of the valve. Pneumatic knife gate valve with stainless steel knife gate, has a good shear effect, the most suitable slurry, powder, fiber and other difficult to control the fluid, are widely used in papermaking, petrochemical, mining, slurry, slurry, Drainage, food and other industries. With a variety of valve seat to choose from, and can be based on site control needs, equipped with electric or pneumatic actuators to achieve the valve automation. Pneumatic knife gate valve in the use of the Notes and its characteristics: Pneumatic knife gate valve opening and closing pieces of the gate, gate direction of motion and fluid perpendicular to the vertical, only for full open and closed, can not be adjusted and section Flow, the gate has two sealing surfaces, the most commonly used gate valve form two wedge sealing surface, wedge angle varies with the valve parameters, usually 50, wedge gate knife gate can be made as a whole , Called rigid gate. Can also be made to produce a small amount of deformation of the gate, to improve its technology to make up for sealing surface angle in the process of deviation, this gate is called a flexible gate. Pneumatic knife-type gate valve is closed, the sealing surface can only rely on medium pressure to seal, that is, rely on media pressure to the pressure plate seal the other side of the seat to ensure that the sealing surface seal, which is self-sealing. Most of the knife Type gate valve is forced seal, that is, when the valve is closed, forced to rely on external force to the gate to the valve seat to ensure the sealing surface of the seal. Pneumatic knife gate drive: Pneumatic. Pneumatic knife gate valve features: 1, sealing effect, U-type gasket has good flexibility. 2, full diameter design, through the ability. 3, the sluice effect is good, can effectively solve the block, granule and fiber media after the breakage of the leak phenomenon. 4, easy maintenance, without removing the valve to replace the valve seal